[Security] Bump handlebars from 4.0.12 to 4.0.14

[dependabot-preview]

Bumps handlebars from 4.0.12 to 4.0.14. This update includes a security fix.

Vulnerabilities fixed

Sourced from The GitHub Security Advisory Database.

Prototype Pollution in handlebars Versions of handlebars prior to 4.0.14 are vulnerable to Prototype Pollution. Templates may alter an Objects' prototype, thus allowing an attacker to execute arbitrary code on the server.

Recommendation

For handlebars 4.1.x upgrade to 4.1.2 or later. For handlebars 4.0.x upgrade to 4.0.14 or later.

Affected versions: >= 4.0.0 < 4.0.14

Changelog

Sourced from handlebars's changelog.

v4.0.14 - April 13th, 2019

Chore/Test:

• test: remove safari from saucelabs - 871accc

Bugfixes:

• fix: prevent RCE through the "lookup"-helper - cd38583

Compatibility notes:

Access to the constructor of a class thought {{lookup obj "constructor" }} is now prohibited. This closes a leak that only half closed in versions 4.0.13 and 4.1.0, but it is a slight incompatibility.

This kind of access is not the intended use of Handlebars and leads to the vulnerability described in #1495. We will not increase the major version, because such use is not intended or documented, and because of the potential impact of the issue (we fear that most people won't use a new major version and the issue may not be resolved on many systems).

Commits

v4.0.13 - February 7th, 2019

New Features

• none

Security fixes:

• disallow access to the constructor in templates to prevent RCE - 42841c4, #1495

Housekeeping

• chore: fix components/handlebars package.json and auto-update on release - bacd473
• chore: Use node 10 to build handlebars - 78dd89c

Compatibility notes:

Access to class constructors (i.e. ({}).constructor) is now prohibited to prevent Remote Code Execution. This means that following construct will no work anymore:

class SomeClass {
}
SomeClass.staticProperty = 'static'
var template = Handlebars.compile('{{constructor.staticProperty}}');
document.getElementById('output').innerHTML = template(new SomeClass());
// expected: 'static', but now this is empty.

Commits

• 272362e v4.0.14
• 2a5a801 Update release notes
• 7375da4 test: remove safari from saucelabs
• d4e64b6 chore: .gitignore more files
• 85c8783 fix: prevent RCE through the "lookup"-helper
• d97a045 chore: reactivate saucelabs-tests
• 5f47c4a test: make security testcase internet explorer compatible
• 7c2fbcc chore: Use node 10 to build handlebars
• 9d4fff1 v4.0.13
• 2d49b67 Update release notes
• Additional commits viewable in compare view

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[coveralls]

Coverage remained the same at 90.054% when pulling 18ec8f2 on dependabot/npm_and_yarn/handlebars-4.0.14 into aa4a457 on master.